Waves
frequency is expressed in ___
Hertz
the medium in which sound waves that you hear travel
air
measure of the energy in a wave
amplitude
what is a measure of the ___ in a wave
amplitude
seismic waves are ____ waves compressional uniform transverse both transverse and compressional
both
region where the medium is crowded and dense in a compressional wave
compression
a type of wave where the matter in the medium moves back and fourth along the same direction that the wave travels
compressional
matter moves in same direction as this wave travels
compressional
waves in which particles of the medium move only in the same direction as the motion of the wave are ____ waves light transverse stadium compressional
compressional
wave in which matter in the medium moves back and forth in the same direction the wave travels
compressional wave
_______ _____-matter in the medium moves in the same direction that the wave travels; example; sound waves
compressional waves
highest point of a wave
crest
as frequency increases, wavelength ____
decreases
bending a wave as it passes around a barrier
diffraction
the bending of waves around a barrier
diffraction
a wave will travel only as long as it has ____ to carry' matter mass energy amplitude
energy
all waves carry this
energy
Wave-repeating disturbance or movement that transfers ______ through _____ or space
energy medium
Wave A has a greater frequency than wave B, but the amplitude of the two waves is the same. The energy of wave A is greater than that of wave B t/f
false
if the wavelength of a given wave decreases, you know that its frequency will stay the same t/f
false
sound waves do not carry energy t/f
false
t/f all waves need a medium in order to travel
false
t/f in a transverse wave the matter in the medium moves back and forth in the same direction that the wave travels
false
t/f the refraction of a wave is how many wavelengths pass a fixed point each second
false
t/f transverse and congressional waves are the two types of mechanical waves
false
t/f waves transfer matter as the travel
false
the amplitude of a wave is measured from the crest of one wave to the crest of the next t/f
false
the unit for frequency is seconds t/f
false
waves in which particles of the medium move at right angles to the direction of the wave are compressional waves t/f
false
light waves travel ____ than sound waves
faster
how many wavelengths pass a fixed point each second
frequency
light waves travel faster in ____ and ____ than in liquids and solids sound waves travel ____ than sound waves
gases empty space faster
when two or more waves overlap and combine to form a new wave
interference
for a given wave, if the frequency doubles , the wave length is halved doubles stays the same
is halved
the angle of incidence is equal to the angle of reflection (law)
law of reflection
a type of electromagnetic wave
light
not all waves need a medium to travel through; example: ____ waves
light
the unit for wave speed
m/s
waves carry energy without transporting _______
matter
a type of wave that travels only in matter
mechanical
a material in which a wave travels
medium
a material that a wave transfers energy through
medium
material through which a wave transfers energy
medium
mechanical waves- waves that can travel only through _____
medium
_________- a material through which a wave travels. may be solid,liquid or ____
medium gas
the units for wavelength
meters
molecules pass energy on to ________ molecules
neighboring
spread apart portion of a compressional wave, less dense region of a compressional wave
rarefraction
reflection occurs when a wave strikes an object and ___ off of it ___ types of waves can be reflected
rebounds all
the angle of incidence of a wave is always equal to the angle of ______
reflection
when a wave strikes an object and bounces off
reflection
bending of a wave cause by a change in its speed as it moves from one medium to another
refraction
ability of an object to vibrate by absorbing energy at its natural frequency
resonance
combinations-not purely transverse or compressional; example: water waves, ____ waves
seismic
a special type of wave pattern that forms when a wave continuously interfere with each other
standing wave
matter moves at right angles to the direction the wave travels
transverse
wave that makes matter in the medium move back and fourth at right angles to the direction the wave travels
transverse
wave that makes matter in the medium move back and forth at right angles to the direction the wave travels
transverse wave
_______ ______- matter in the medium moves back and fourth at right angles the direction that the wave travels; example: water waves
transverse waves
lowest point of a wave
trough
mechanical waves need a medium through which to transport energy t/f
true
t/f a wave will travel only as long as it has energy to carry
true
t/f in a transverse wave, the higher the amplitude, the more energy it carries
true
t/f the speed of a wave is determined by multiplying the wave length by the frequency
true
the lowest point on a transverse wave is the trough t/f
true
Wave ___ or, v, describes how fast the wave moves forward
velocity
all waves are produced by something that
vibrates
all waves are produced by something that does this
vibrates
the frequency of a wave equals the rate of ____ of the source that creates it
vibration
a repeating disturbance that transfers energy through matter or space
wave
repeating disturbance or movement that transfers energy through matter or space
wave
what is determined by the medium
wave speed
distance bewteen one point on a wave and the nearest point just like it
wavelength
